Giorgio De Ros, Sandro Conci, Tommaso Pantezzi, Gianluca Savini
Valuing the economic impact of D. suzukii
on soft fruit industry in Trentino (Italy)
Merriam-Webster Online
Field of application:
Impact assessment on four host crops
Range of impacts:
Direct impacts
Data used:
Business data
… the
economic
impact of D. suzukii ….
0% 5% 10% 15% 20% 25% 30% 35% 40% 2010 2011 2012 2013 Year % o f a ff e c te d s a m p le s… on soft fruit industry in Trentino
Crop
Avg yearly output 2007-2009 Quantity (tons) Price (€/kg) Value (€) Strawberry 4,167 3.37 14,031,435 Raspberry 669 7.91 5,288,781 Blackberry 553 4.38 2,403,823 Blueberry 689 4.99 3,437,482 TOTAL 25,715,313
Source: Statistical Service of the Autonomous Province of Trento
Ex ante reference
Crop
Avg yearly output Quantity (tons) Price* (€/kg) Value (€) Strawberry 4,167 2.87 11,938,661 Raspberry 669 7.08 4,735,710 Blackberry 553 4.47 2,472,287 Blueberry 689 4.99 3,437,482 TOTAL 22,584,140
*
Average price at farm gate in the period 2010-2013Source: Statistical Service of the Autonomous Province of Trento
Crop
Avg yearly output
Yearly revenue losses (€) Quantity (tons) Price (€/kg) Value (€) Strawberry 4,167 2.87 11,938,661 426,784 Raspberry 669 7.08 4,735,710 544,408 Blackberry 553 4.47 2,472,287 461,179 Blueberry 689 4.99 3,437,482 1,430,285
TOTAL
22,584,1402,954,254
Source: our elab.
Revenue losses
Treatments
Mass trapping
Field sanitation
Crop
Avg yearly output
Revenue losses 2012 Revenue losses 2013 Revenue losses (2012-13) Quantity (tons) Price (€/kg) Value (€) Strawberry 4,167 2.87 11,938,661 139,315 203,685 171,500 Raspberry 669 7.08 4,735,710 135,962 170,830 153,396 Blackberry 553 4.47 2,472,287 246,452 244,052 245,252 Blueberry 689 4.99 3,437,482 417,778 556,951 487,364
TOTAL
22,584,140 1,031,104 1,267,1161,149,110
Source: our elab.
Revenue losses
Crop Treatment Application rate Cost x ha (€) Area (Ha) Treatment cost (€) (cl/hl) hl/ha Strawberry Deltamethrin 50 15 35.3 128 4,518 lambda-Cyahlothrin 25 15 60.0 7,680 Raspberry Deltamethrin 50 15 70.6 93 9,849 Spinosad 25 15 180.0 16,740 Blackberry Deltamethrin 50 15 105.9 33 3,495 Spinosad 25 15 180.0 5,940 Blueberry Phosmet 250 15 223.5 70 10,430
TOTAL
58,652
Source: our elab.
Crop Treatment
Heavy mechanisation Light mechanisation No mechanisation
Application Costs (€) Time (hrs) Cost (€/h) Area (ha) Time (hrs) Cost (€/h) Area (ha) Time (hrs) Cost (€/h) Area (ha) Strawberry Deltamethrin 2 35,26 108,8 7,5 24,84 6,4 9 12,29 12,8 10.281 lambda-Cyahlothrin 2 35,26 108,8 7,5 24,84 6,4 9 12,29 12,8 10.281 Raspberry Deltamethrin 2 35,26 79,0 7,5 24,84 4,7 9 12,29 9,3 14.951 Spinosad 2 35,26 79,0 7,5 24,84 4,7 9 12,29 9,3 7.475 Blackberry Deltamethrin 2 35,26 28,0 7,5 24,84 1,7 9 12,29 3,3 16.867 Spinosad 2 35,26 28,0 7,5 24,84 1,7 9 12,29 3,3 5.622 Blueberry Phosmet 2 35,26 59,5 7,5 24,84 3,5 9 12,29 7.0 5.313
TOTAL
70.789
Source: our elab.
Crop Traps (nr/ha) Food bait cost (€/trap) Food bait changes (nr) Food bait cost (€/ha) Worktime (min/ha) Work cost (€/ha) Total cost (€/ha) Area (ha) Total cost (€) Strawberry (Junebear) 250 0.2 5 250 1875 234.38 484.38 64 31,000 Strawberry (Everbear) 250 0.2 12 600 4500 562.50 1162.50 64 74,400 Raspberry 250 0.2 7 350 2625 328.13 678.13 93 63,066 Blackberry 250 0.2 7 350 2625 328,13 678.13 33 22,378 Blueberry 250 0.2 5 250 1875 234.38 484.38 70 33,906
TOTAL
224,730
Source: our elab.
Crop Worktime (h/d) Days (nr) Work cost (€/h) Area (ha) Field sanitation and clean-up costs (€) Strawberry (Junebear) 1 75 7.5 64 36,000 Strawberry (Everbear) 1 45 7.5 64 21,600 Raspberry 1 75 7.5 93 52,313 Blackberry 1 75 7.5 33 18,563 Blueberry 1 45 7.5 70 23,625
TOTAL
152,100
Source: our elab.
Scenario
Economic impact (€)
Without management strategy
2,954,254
With a management strategy
1,655,381
Revenue losses 1,149,110
Treatment costs 58,652
Application costs 70,789
Mass trapping 224,730
Field clean-up 152,100
Source: our elab.
Scenario
Investment (€/ha) Duration (yrs) Depret. (€) Install./ Deinst. (h/ha) Work Cost (€/ha) Costs (€/ha) Area (ha)Impact
(€)
Exclusion net
6,500 5 1.300 100 1,000 2,300 70161,000
Without
management
strategy
1,430,285
With a
management
strategy
560,638
Source: our elab.
